Update watchfiles to 1.0.0

[pyup-bot]

This PR updates watchfiles from 0.24.0 to 1.0.0.

Changelog

1.0.0

What's Changed
* Bump PyO3 to 0.23, drop Python 3.8 support by gi0baro in https://github.com/samuelcolvin/watchfiles/pull/307
* allow modify `poll_delay_ms` argument using an environment variable by joelpelaez in https://github.com/samuelcolvin/watchfiles/pull/303
* remove set_version, prepare for v1 release by samuelcolvin in https://github.com/samuelcolvin/watchfiles/pull/309
* fix version check and release in CI by samuelcolvin in https://github.com/samuelcolvin/watchfiles/pull/310

New Contributors
* joelpelaez made their first contribution in https://github.com/samuelcolvin/watchfiles/pull/303

**Full Changelog**: https://github.com/samuelcolvin/watchfiles/compare/v0.24.0...v1.0.0

Links

• PyPI: https://pypi.org/project/watchfiles
• Changelog: https://data.safetycli.com/changelogs/watchfiles/
• Repo: https://github.com/samuelcolvin/watchfiles